METHOD FOR MANUFACTURING FILTER MOLDED BODY

PROBLEM TO BE SOLVED: To provide a filter molded body which, even if lengthened, can be easily removed from a mold and can suppress surface curling generated when removed from the mold.SOLUTION: A metal mold 2 is used which comprises a side mold 3 formed into a cylindrical shape and having, on at least a part in the cylindrical axis direction of its inner surface, a tapered surface 3a inclined with respect to a predetermined linear direction along the cylindrical axis direction to narrow toward one side of the linear direction, a first end mold 5 arranged on the one side of the linear direction of the side mold 3, and a second end mold 7 arranged on the other side of the linear direction of the side mold 3, and in which a cavity 2a for forming a filter molded body 1 is formed by a part including at least the tapered surface 3a of the inner surface of the side mold 3, the first end mold 5, and the second end mold 7. After the filter molded body 1 is formed in the metal mold 2, the filter molded body 1 is pressed from the one side of the linear direction of the side mold 3 to the other side of the linear direction to be removed from the side mold 3.SELECTED DRAWING: Figure 4 【課題】たとえフィルター成形体を長尺化しても、フィルター成形体を容易に脱型できると共に、脱型時に生じる表面捲れを抑制できるフィルター成形体の製造方法を提供する。【解決手段】筒状に形成されており、その内面の筒軸方向の少なくとも一部分に、筒軸方向に沿った所定の直線方向に対して傾斜して前記直線方向の一方側に向かって窄まるテーパー面３ａを有する側型３と、側型３の直線方向の一方側に配置される第１端型５と、側型３の前記直線方向の他方側に配置される第２端型７とを備えており、側型３の内面の少なくともテーパー面３ａを含む部分と第１端型５と第２端型７によって、フィルター成形体１を成形するキャビティ２ａが形成される金型２を使用する。金型２内でフィルター成形体１を成形した後、側型３の前記直線方向の一方側からフィルター成形体１を前記直線方向の他方側に押圧してフィルター成形体１を側型３から脱型する。【選択図】図４